After finding the direction of flow and center of the line, we bury copper wire perpendicular to its center.
After finding the direction of flow and center of the line, we bury copper wire perpendicular to its center.
在知道了流动方向和能线中心后，我埋设了垂直能线中心的铜线。
After finding the direction of flow and center of the line, we bury copper wire perpendicular to its center.
在知道了流动方向和能线中心后，我埋设了垂直能线中心的铜线。